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AssigneeMetall-Chemie Technologies GmbH
InventorsHelmut KIPPHARDT, Tim NAUNDORF, Erik RUF, Wolfgang MAISON, Tom SEDDIG
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With the present invention, sustainable systems for corrosion, inhibition in the processing of metals (in particular iron, aluminum and magnesium) are made available. These systems being in full accordance with the principles of green chemistry comprise an amino acid as neutralizing component for an acidic corrosion inhibitor, whereby the amino acid is used in deprotonated form. The resulting metalworking fluids may be water- or oil-based or semi synthetic formulations. The neutralization of acidic corrosion inhibitors with the claimed system comprising an amino acid consistently achieves convincing results and, together with acidic corrosion inhibitors from corresponding sources, completely renewable systems for corrosion inhibition are provided.
Method of of neutralizing an acidic corrosion inhibitor in the formulation of a metalworking fluid, which comprises incorporating am amino acid as a neutralizing component in said metalworking fluid wherein the amino acid is used in deprotonated form as its salt with a base;
The method of claim 1, wherein the amino acid represents the only neutralizing component and/or wherein the amino acid carries a primary amino-function.
Metalworking fluid comprising an acidic corrosion inhibitor and an amino acid, wherein the amino acid is monomeric, in form of a dipeptide or wherein the amino acid is a derivative of a monomeric amino acid or of a dipeptide, and wherein the amino acid is used in deprotonated form as its salt with a base.
The metalworking fluid of 7 which is water-based, oil-based, or in form of an emulsion.
Dependencies are inferred from the claim text.